The embryo conceived by one mother has been removed from her womb, stored by refrigeration, then transplanted to another mother for normal birth. Mother’s name Is “Mrs. Rabbit”—some day it might be Mrs. Jones.

IF YOU could mate a man and a woman—could let the embryo get just a start, then transfer it to the body of another woman to complete its prenatal growth and be born—that would start a revolution in human genetics, wouldn’t it!

ONE of the most difficult problems of flying—that of reducing the speed of a high powered airplane to a minimum without slowing down the engine—has been solved to some extent by a Frenchman, M. Bille, who has invented an airplane in which
the wing surface can be mechanically increased, thus cutting down the speed of the machine.

Early inventions for varying the size of wings in flight lacked wing rigidity necessary to safe flying. Bille’s invention overcomes this handicap by means of two pairs of extension wings that telescope snugly into the main wings of the plane, so that they can be extended or taken in at will during flight.

At a recent demonstration of the plane Maneyrol, the French record making aviator, flew 100 miles an hour, then slowed down to 35 miles, and finally to 12 miles, simply by extending the wings. This was done in six seconds.

SHARKS are always intriguing to the curiosity—more so than lions; for you can less frequently get a good look at a shark. A professional shark hunter is now promoting plans for an open-water aquarium with, not tanks, but pens; and floating steel compartments from whose windows thrill seekers may watch the demons of the deep. The idea, as distinguished from its accomplishment, is very old; a medieval picture shows Alexander the Great in a (fabulous) submarine observatory.

A CAMERA so small that it can be swallowed without discomfort takes sixteen pictures of the inside of the stomach.

A two inch long metal cylinder contains the camera, a roll of film, and a tiny flash bulb capable of 20,000 candle-power illumination. The control plunger runs through a two-foot rubber tube attached to the cylinder.

NO LONGER can a murderer defeat justice by placing the gun in the hand of the victim to mislead the coroner’s jury into returning a verdict of suicide. On the other hand, it will no longer be possible for an innocent man to be convicted of murder on circumstantial evidence if the deceased fired the shot which ended his own life, for science can now identify positively the hand that fired the gun. Whenever a firearm explodes, the generated gases expand and blow backward as well as forward. No firearm has yet been built in which some of these gases do not escape backward.

Photographic records of pulsations of the human heart are produced by a portable instrument containing an electric “ear” and equipment for converting sound into light. The electric ear, a sensitive condenser microphone, picks up the heart’s sounds, which are amplified until they can be heard through a radio loud speaker.

Here’s how one man beat the high cost of printing by inventing Xerographyâ€”a new process which requires no ink, rollers or heavy presses.
CHESTER CARLSON, patent attorney, wanted to have one of his manuscripts published but the cost astonished him. It started him thinking about methods for reducing printing costs. And what’s more important, it started him experimenting.

Soon he found it essential to ask for financial heLp. The Battelle Memorial Institute of Research with the sponsorship of the Haloid Company, came to his rescue. The result? Well, it has just been announced that a revolutionary process of inkless printing has finally been developed. It’s expected to change radically most printing and publishing operations.

Named “Xerography,” the method reproduces pictures and text at a speed of 1200 feet within 45 seconds after exposure of the photographed material. It substitutes for liquid ink a fine, iron powder mixed with a dry plastic substance.
With the prospect of terrifically reduced printing costs, inventor Carlson feels he has really accomplished something. Says he might even publish a manuscript, now.

Here’s how it works. 1 & 2: Surface of coated plate is electrically charged as it passes under wires.

Automatic airplanes, steered and flown by special photo cell equipment invented by the Englishman, Mr. Sidney G. Brown, may revolutionize war air raids.

WINGING their way with deadly precision towards the apparently unsuspecting city which is their objective the enemy bombers are alive with bustling activity as the bombing crews take station and prepare for the impending attack.

INSTEAD of waving a baton, Buddy Wagner, New York dance-band leader, twirls dials and levers on a control panel to mix the tones and adjust the volume of each section of his novel electrified orchestra. Crystal pick-ups are attached to each instrument, and the music produced is amplified and then wired to three loudspeakers set in front of the electric swing band, as seen in the photograph above.

The big guns of aerospace technology are being enlisted in the battle against the major source of air pollution in this countryâ€”automobile exhaust. The mission: to reduce the one-quarter to one-half ton of carbon monoxide and hydrocarbons each car spews into the atmosphere in a year, as a result of incomplete fuel combustion. The battle plan: Develop a thermal reactor that would replace the standard exhaust manifold and serve as an afterburner. But such a reactor must withstand temperatures occasionally exceeding 2,000 degrees F, thermal shock from cold starts, and jarring vibrationsâ€”all problems routinely encountered in space exploration.